/*
GanttProject is an opensource project management tool.
Copyright (C) 2005-2011 GanttProject Team

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 3
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/
package net.sourceforge.ganttproject.gui.view;

import javax.swing.Icon;

import net.sourceforge.ganttproject.chart.ChartSelectionListener;
import net.sourceforge.ganttproject.gui.GanttTabbedPane;
import net.sourceforge.ganttproject.language.GanttLanguage;
import net.sourceforge.ganttproject.language.GanttLanguage.Event;

/**
 * Controller which hides/shows view tab.
 *
 * @author dbarashev (Dmitry Barashev)
 */
class ViewHolder implements ChartSelectionListener, GanttLanguage.Listener {
    private final GanttTabbedPane myTabs;

    private int myIndex;

    private boolean isVisible;

    private final Icon myIcon;

    private final ViewManagerImpl myManager;

    private final GPView myView;

    ViewHolder(ViewManagerImpl manager, GanttTabbedPane tabs, GPView view, Icon icon) {
        myManager = manager;
        myTabs = tabs;
        myView = view;
        myIcon = icon;
        GanttLanguage.getInstance().addListener(this);
        assert myView!=null;
    }

    void setActive(boolean active) {
        if (active) {
            myView.getChart().addSelectionListener(this);
        }
        else {
            myView.getChart().removeSelectionListener(this);
        }
    }

    void setVisible(boolean isVisible) {
        if (isVisible) {
            String tabName = myView.getChart().getName();
            myTabs.addTab(tabName, myIcon, myView.getViewComponent(), tabName, myView);
            myTabs.setSelectedComponent(myView.getViewComponent());
            myIndex = myTabs.getSelectedIndex();

        } else {
            myTabs.remove(myIndex);
        }
        this.isVisible = isVisible;
    }

    boolean isVisible() {
        return isVisible;
    }

    @Override
    public void selectionChanged() {
        myManager.updateActions();
    }

    @Override
    public void languageChanged(Event event) {
        if(isVisible()) {
            myTabs.setTitleAt(myIndex, myView.getChart().getName());
        }
    }
}